Quick reference crib sheet for daily subnetting tasks. You can use the IPv4 and IPv6 charts for IP address planning and to convert subnet masks to CIDR and wildcards.

See also RFC 1878.

Feb 12, 2021 · As a developer or network engineer, you may need to occasionally look up subnet mask values and figure out what they mean. To make your life easier, the freeCodeCamp community has …

Comprehensive subnet cheat sheet with CIDR notation, subnet masks, IP ranges, and private network references. Essential quick reference for network engineers.

Jul 23, 2025 · This cheat sheet provides a handy reference for understanding and calculating subnet masks, ensuring efficient network management and troubleshooting. By using this resource, you can …

Jan 13, 2025 · We know it can be pain trying to remember which CIDR notation to use or what subnet mask to enter for a specific subnet. That’s why we created this awesome looking IPv4 CIDR cheat …

Subnet mask cheat sheet with CIDR notation, IP address counts, wildcard masks, and hex values. Complete reference table for network administrators and IT professionals.

This Subnet Mask Cheat Sheet lists various subnet masks along with the corresponding number of addresses, hosts, and the size of each subnet. It’s an easy-to-reference guide for quickly determining …

Mar 18, 2025 · The subnet mask is a critical component of IP subnetting. It helps devices determine which part of an IP address belongs to the network, which part belongs to the subnet, and which part …

Jan 19, 2025 · Subnetting divides networks into smaller, more manageable sections, optimizing performance and security. This cheat sheet briefly references IPv4 subnet masks, their …